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If , then the determinant equal
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a
0
b
1
c
pa+qb+rc
d
none of these
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Correct option is A
we have Δ=pqra3+b3+c3-abcp3+q3+r3But a+b+c=0⇒(a+b)3=-c3⇒ a3+b3+3ab(a+b)+c3=0⇒ a3+b3+c3=-3ab(-c)=3abcSimilarly, p3+q3+r3=3pqr Thus , Δ=pqr(3abc)-abc(3pqr)=0Similar Questions
Let .Then equal to
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